Traction wheel



May '17 1927 L. SLAUSON TRACTION WHEEL Filed Nov. 15, 1924 Inventor:

Patented May 17, 1927.

Thisf'invention relates to @a: novel and improved traction wheeland-ha's for one of its principal objects =.-to :zp'rovide means whichmay "be readily. applied to "and detached from a :whfeelirin'ni: aridwhich, when :ap-

plied, will form a ground gripping device and support for the rim.

.:'A"still furtherob'ectis toi provide a de-" vice .compr-ising"a-A'drivin'g tooth and a traction shoe; both of which maybe readilyattachedfto aJrim ,Of 'afWhQBh'by the same means which will:rigidly-hold the tooth to the wheel and loosely? and pivotally support.

the shoe so that it may have-movement about its i pivot randy. also mayhave bodily. movenrent relative to thetrim.

. A still: further object, is to :provide adevice of. the; abovecharacter, which: may, be

i fastened-to rthe rimbyaYSingle-bOlt or the like-"and whicha'will' beheld. inalignin'ent' by cooperation 'betweenthe rim, tooth and shoewithout the. necessity of providing furthe'r-fni'eans. A l

. A still. further "obj ect is *to; provide a j-device-"of tlie-i'above[character iin-which the tofoth hasra driving surface cooperating withcorrespondingidri-ving surface uponjthe traction" shoe: a'IIdLWhGI'lHjthere isjfull penetration of; the etooth ;i-nto :the shoe before theshoe: touches. therounl,7 y. 11 ng 3 completely; effective drivingengagement between theitooth andfthe shoeassoon asthe shoe comes intoengagement with the ground. i l

A still further object is to provide a de- .vice of the above characterin which the number of parts is reduced to a minimum, which may beinexpensively manufactured, readily applied to existing wheels and willbe eflicient in operation.

In the drawings in which I have shown a selected embodiment of myinvention,

Fig. 1 is an elevation of a portion of a wheel having my inventionapplied thereto. Fig. 2 is a fragmentary view of the wheel of Fig. 1showing one shoe with itsdriving tooth in another position with respectto the wheel. I v Fig. 3 is a sectional view on the line of Fig. 2. 1

Referring now to the drawings, the nul meral 1 designates a wheel of anysuitable 7 construction having a rim 2 provided with;

a substantially flat; ground engaging portion 3. This flat portion 3 isapertured at suitable as-at to receive:bolts "5 or othersiiitablefastening means-which is employed to secure -to* the Tim, thedriving tooth -(i. iEach driving'tooth consists of a portion 7, lyi'ngincontactfwith the rim of the wheel :and having at. itsends,,dr ivingsurfaces Y 8 to contact -w1th corresponding surfaces Q9 :upon thegnojund. engaging bars 10. .;of thetractionishoe llg w :The'. tractionshoe 11 :lSl further. provided with sides 12 looselygengaginggthesides-of the rim; and acting as;- guides to keep; the

shoe in; alignment; upon the rim. Theishoe pick-up gbar: l securedgatits centralmpoint to the rim meansof the bolt 5.wh ich v also ec r s h to h. her tee d hav n i s ends]: 1 L .curved outwardlyi away. from therimbfthewheel; The traction shoei s pro ndes .W t-h trac tions p n w hthe Trim. of the wheel is adapted torest .when

ti e-s oe is; fl tmp st eamen a the ends 14 of the pickeupbar; gengagetheshoe on the? outer side; of these itrack .sections- I prefer toprovide my traction shoe withlongitud ignalstrengthening H ribs-16 and;I pro 7 newne s ribs at their central portions with arcuate ,re cesses1'1 in. the; ends of thel pickeup baract when they contact with the:shoe.

wh e my: enemy shoe i as ea mannenl prefergtoQmake it,- as aii-integralQhaving an aperture 18. in 1 the center thereof, to receive; thetoothgand the bolt,

and the traclrsections 15 'ex'tea'aon either.

side of this central aperture. Parallel to the strengthening ribs 16 andat the edgesof the shoe, I may also provide strengthening ribs 19 in theform of arches as plainly shown in the drawings.

In operation and assuming that the wheel in Fig. 1 is revolving in thedirection of the arrow therein, it will be seen thatthe shoe at theextreme right of Fig. 1 is permitted to pivot about the pick-up bar and,also to move bodily in relation to the wheel to a point wherein one endof each track section will come in Contact withthe rim of the wheel,whereby the tooth will have full 'driving penetration in respectto thetraction shoe;

As the wheel continues to revolve, the same shoe will come in contactwith the ground and as soon as it does, it is obviously moved 3 alongthe rim of the wheel until the surfaces 9 and 8 come into contact, anddue to the *iuii ptimeatio'i r r the mam Shoe, a

i will be seen that acomplete driving engagement is made at once. Bythis arrangement it is evidentthat the greatest possible use is made ofthe shoe, in that a'full drivingei gagement is had between the tooth andthe shoe as soon asthe shoe touches the ground a and this drivingengageinentwill'la'st until the shoe leaves the-ground, iLl'ijVhlCh tuneit. Wlll, occupy some such position as that shown J at the eXtreme'le-ftof Fig. 1. The full driving'eng-agement will=be had until the shoe 1reaches some such position as the second one ,fromjtheright"in Fig.1 andthen the sur v faceS will."gradually inove'galong the surface 9 to somesuch position as the second one fi'romthe left in Fig. l. It-will benoted,

liowever,'that evenin this lastpositionjther'e is a driving connectionbetween the surfaces,

I thereby insuring that this driving connection will bemaintained-aslongas the shoe is in contact with the ground. 'The pick-upbar will'then lift the shoe from the ground, and as the Wheel continuesits rotation, the shoe will slide to aposition suclras shown-at theextreme left of Fig. 1. It willv be no- 'ticed that if the rotationof-the Wheel be reversed, the shoe in this position is so placed thatfull driving engagement between'tooth and shoe will be'obtainedimmediately upon the shoe touching the ground, because of this fullpenetration-of the'tooth into the shoe.

Therefore, my invention gives as efi'ective results with rotation" ofthe wheel in one direction as in the other;

From the above, it will be evident that I have provided a device whichmay be readily applied to and detached from a wheel gim,

to which it maybe secured by a single bolt;

which will be held in alignment by contact of the sides 12 withthe rim,andalso by the fact thatthe to'otlr'always has bothends within theaperture 18. Thefnumber of parts is reduced to a, minimum, therebyinaterially reducing the expen'seof manufactureand at the same time, amost efficient structure is ach eved in which the maximum driv- 111gpower is obtained; 'The entire device is symmetrical in shapeand, whenpartsthere i i inione position on the wheel rini,the whole Y device canbe reversed on the wheel rim to ofbecoine'worii because of use of thedevice prolong its use.

I I am aware that changes in the form, con} 7 struction and arrangementof parts may be, u made without departing irom the spirit and withoutsacrificing the advantages of the 1 invention and I reservethe right tomake all i f such changes as faiilV fall within the scope oithefollowing claims.

fl Iclaim: IQThe combination or a, riin, a traction shoe having acentral aperture, track sections on either side-of-said aperture,.apick-up bar j loosely engagingsaid shoeon the outer side" of said tracksections and means passin'gfi through said aperture for up bar to saidrim.

2'. The combination of a rim, a traction shoe having a central aperturetherein, track sections on either side o'f'said aperture, a

pick-up bar loosely engaging-the outer side or said track sections,a'driv ng' tOOlIh'OH securing said pick f said rinr and receivedwithin'said aperture":

outer side of-said shoe, and the outer side of said shoe being providedwith arcuate recesses to receive the'ends of said bar.

. Louis E. sLAUsoN. I Y

